main section:nth-child(1) {
    height: 1160px;
}
main .title {
    display: flex;
    height: 160px;
    flex-direction: column;
    align-items: center;
}
main .title h4 {
    margin-top: 40px;
    font-size: 26px;
}
main .title p {
    margin-top: 26px;
    color:#a9a9a9;
    font-weight: 700;
}
main section:nth-child(1) .introduce {
    height: 1000px;
    background-color: pink;
}
main section:nth-child(2) {
    height: 1080px;
    background-color: #fff;
}
main section:nth-child(2) .introduce {
    height: 920px;
    background-color: pink;
}